What kind of insect is red and has no spots on its back It is not a lady bug it is eating your roses and perennials?

The insect you're describing could be a red rose beetle, also known as the Japanese beetle. This pest is known for its red coloration and can cause significant damage to roses and other flowering plants by feeding on their leaves and petals. Another possibility is the rose aphid, which can also appear reddish and feeds on plant sap. Both can be harmful to your garden, so it's important to identify and manage them promptly.